Nganga, Joseph B. published the artcileDibromorhodamine-based photoredox catalysis under visible light for the colorimetric detection of Hg(II) ion, COA of Formula: C20H18BrN3, the publication is Bulletin of the Korean Chemical Society (2022), 43(7), 946-950, database is CAplus.
We demonstrated a colorimetric readout of Hg(II) ion through visible-light-induced polymerization, initiated by an Hg(II)-responsive photoredox initiator/catalyst under aerobic conditions. Thiosemicarbazide-functionalized 4â?5â?dibromorhodamine was synthesized as a stimuli-responsive photoredox catalyst. The rhodamine derivatives bearing thiosemicarbazide have been known as fluorogenic probes of Hg(II) ion with excellent sensitivity and selectivity. In this work, we incorporated a heavy halogen atom (i.e., Br) onto the xanthene core ring of the rhodamine derivative to improve the photoredox catalytic performance of rhodamine 6G, which exhibits a low catalytic performance, presumably due to the poor quantum yield of intersystem crossing. Thus, this photoredox catalyst led to the formation of a hydrogel with Hg(II) ion in a concentration of 10 μM, as the catalyst initiated free-radical polymerization of poly(ethylene glycol) diacrylate and N-vinylpyrrolidone with triethanolamine under visible light for 1 min.
Bulletin of the Korean Chemical Society published new progress about 518-67-2. 518-67-2 belongs to bromides-buliding-blocks, auxiliary class Other Aromatic Heterocyclic,Salt,Amine,Benzene, name is Dimidium bromide, and the molecular formula is C20H18BrN3, COA of Formula: C20H18BrN3.
Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary